This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 7.04:
kdelibs4c2a 4:3.5.6-0ubuntu14.3

Ubuntu 7.10:
kdelibs4c2a 4:3.5.8-0ubuntu3.4

Ubuntu 8.04 LTS:
kdelibs4c2a 4:3.5.9-0ubuntu7.1

After a standard system upgrade you need to restart your session to effect
the necessary changes.

Details follow:

It was discovered that start_kdeinit in KDE 3 did not properly sanitize
its input. A local attacker could exploit this to send signals to other
processes and cause a denial of service or possibly execute arbitrary
code. (CVE-2008-1671)